Draft-equalizer.



No. 784,993. v PATENTBD MAR. 14, 1905.

J. DOBBBRSTBIN.

. DRAFT EQUALIZBR. APPLIOAION FILED MAY 20,'1904. RENBWED PEB. 16, 1905.

UNITED STATES Patented March 14, 1905.

JULIUS DOBBERSTEIN, OF ALMA CITY, MINNESOTA.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 784,993, dated March 14, 1905.

Application filed May 20, 1904. Renewed February 16, 1905. Serial No. 245,966.

lb a/Z, r11/1,0m it may concern:

Be it known that I, J ULIUs DoBBnRsTEIN, a citizen of the United States, residing at Alma City, in the county of Waseca and State of Minnesota, have invented a new and useful Draft-Equalizer, of which the following is a specification.

This invention relates to dra ft-equalizers for use in connection with harvesters and similar machines wherein'one horse is employed upon the grain side of the tongue and two or more horses upon the stubble side, and has for its object to improve the construction and produce an inexpensive and elicient device which will Aequalize the draft, and thereby eliminate side draft, and which may be reversed in position to adapt it to operate upon either side of the tongue without change of structure of any of the parts.

With these and other objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novel features of construction, as hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denoted by like designating characters., is illustrated the preferred form of the embodiment of the invention capable of carrying the same into practical operation, it being understood that the invention is not necessarily limited thereto, as various changes in the shape, proportions, and general assemblage of the parts may be resorted to without departing' from the principle ofthe invention or sacrificing any of its advantages, and the right is therefore reserved of making all the changes and modifications which fairly fall within the scope of the invention and the claims made therefor. y

In the drawings thus employed, Figure 1 is a plan view of the device as arranged for the use of one horse on`the left or grain side and three upon the right or stubble side of the tongue. Fig. 2 is a perspective enlarged View of the supporting-plate of the pivoted arm.

The draft-tongue is represented at 10,of the usual form, and having a draft-beam 11 disposed transversely of the same. Bolted at 12 to the tongue l1() and at 13'to the beam 11 is a bar 14, the bolt 13 also serving as a fastening means for one end of a Alink 15, the opposite end of the link being bolted at 16to the tongue. The two members extending reversely oblique to the longitudinal plane of the tongue form a bracket extending laterally from the tongue and upon which the beam 11 swings. The pivotal point 13 is disposed centrally of the beam, and the latter is provided with means, such as a link 17, for coupling a doubletree 18 to the end adjacent to the bracket side of the tongue, the doubletree having the usual swingletrees 19 2O coupled thereto.

Bolted at 21 22 to the tongue 10 is a plate 23 and extending laterally from the same at the side opposite to the bracket members 14 15. versible upon the tongue 10, and the plate is provided with oppositely-disposed studs 24 25 to form pivots, upon one of which an arm 26 swings. ,The tongue 10 will bey formed with a recess to receive the stud 24 or 25, which for the time being is presented downwardly, While the stud which for the time being is presented upwardly forms the pivot for the arm 26. Thus when the plate is bolted to the tongue for extension to the left one of the studs will be presented upwardly, and when the plate is reversed the other stud will be presented upwardly. Thus it will be obvious that the beam 11 may be disposed upon either the right or left hand side of the tongue, as required, to adapt the device for use upon a right or left hand machine. The plate 23 is also provided with spaced stop-ribs 27 28 upon one side and corresponding ribs 29 30 on .the opposite side, the ribs for engaging the tongue by their inner ends andalso forming means for supporting a keeper 31, spaced from the plate to guide the arm 26 and retain it in position. A keeper 32 is also provided over the stud 24 or 25, to which for the time being the arm 26 is pivoted and held in position by the bolts 21 22, the two keepers thus efficiently coacting to maintain the arm movably in position upon the plate.

Connected by pivot-bolts 33 34 between the free end of the arm 26 and the adjacent end of the beam 11 is a stay-bar 35, and pivot- The plate 23 and members 14 15 are res 'ally connected at one end by the same pivoti bolt 33 is a pull-bar 36, having means at its free end, such as a link 37, for the connection of a doubletree 38, the latter extending over the tongue lOand havinga swingletree 39 upon one side ofthe same and aswingletree 40 upon the other side or upon the same side as the doubletree 18 and its swingletrees 19 and 20. A link 41 is pivoted at 42 to the beam 11 and at 43 to the pull-bar 36.

By this arrangement of parts it will be olovious that a very simple and efticient device is produced whereby side draft is eliminated and the draft of the horses equalized and wherein provision is made for the ready reversal of the parts to change from a right to a left hand machine, or vice versa, without change of the structure of any of the parts.

The beam 11 will be preferably of wood, and the bracket members 14 15, plate 23 and its keepers 31 32, arm 26, bars 35 36, and link 41 will be of malleable iron or steel and as light as will be consistent with the strains to which they will be subjected.

Having thus described my invention, I claim- 1. In a draft-equalizer, a bracket for attachi ment to the draft-tongue and extending laterally from the same, a draft-beam centrally pivoted to said bracket and having means for the connection of a doubletree at the end adjacent to the bracket side of the tongue, an arm for pivotal attachment by one end to the tongue and extending from the same at the side opposite to the bracket a connecting member between the free end of said pivoted arm and the adjacent end of said beam, a pull-bar pivoted to the free end of said pivoted arm and having means for the connection of a doubletree to its free end, and a linkconnecting said pull-bar to said beam.

2. In a draft-equalizer, a bracket for attachment to the draft-tongue and extending laterally from the same, a draft-beam centrally pivoted to said bracket and having means for the connection of a doubletree at the end adjacent to the bracket side of the tongue, a plate for connection to the tongue and extending from the same at .the side opposite to said bracket, an arln pivoted by one end to said plate andextending thereover, a connecting member between the free end of said pivoted arm and the adjacent end of said beam, a pullbar pivoted to the free end of saidpivoted arm and having means for the connection of a doubletree at its free end, and a link connecting said pull-bar to said beam.

3. In a draft-equalizer, a bracket for reversible attachment to the draft-tongue whereby it may be disposed for extension laterally from either side of the same and having means for the attachment of a doubletree at the end adjacent to the side of the tongue from which the bracket projects, a plate for reversible connection to the draft-tongue and extending from the same at the side opposite to the bracket, an arm pivoted to the plate, a connecting member between the free end of said pivoted arm and the adjacent end of said beam, a pull-bar pivoted to the free end of said pivoted arm and having means for the connection of a doubletree to its free end, and a link connecting said pull-bar to said beam. A 4.YV In a draft-equalizer, a bracket for revel-sible attachment to the draft-tongue whereby it may be disposed for extension laterally from either side of the same and having means for the attachment of a doubletree at the end adjacent to the side of the tongue from which the bracket projects, a plate for reversible connection to the draft-tongue and extending from the same at the side opposite to the bracket, and having oppositely-disposed studs extending from its opposite sides, an arm pivoted upon the outer oneof said studs and extending over said plate, a keeper extending over said arm and the stud upon which it is pivoted, and a keeper extending over said arm at the free edge of said plate.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JULIUS DOBBERSTEIN.

vWitnesses:

ANTHONY OGRADY, A. T. HELLEBo. 

